Joseph L Weir

age ~65

from Midland, MI

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Joseph Weir Phones & Addresses

Superabsorbent Polymers Having A Slow Rate Of Absorption
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US Patent:

6433058, Aug 13, 2002
Filed:

Dec 7, 1999
Appl. No.:

09/455927
Inventors:

Joseph L. Weir - Midland MI
Larry R. Wilson - Beaverton MI
Assignee:

Dow Global Technologies Inc. - Midland MI
International Classification:

C08K 318
US Classification:

524431, 523105, 523111, 524433, 524437, 524459, 524460, 524523, 524527
Abstract:

Superabsorbent polymers having a slow rate of absorption, and a process for their preparation. The superabsorbent polymer has a slow rate of absorption, is crosslinked with a covalent crosslinking agent and the metal of a polyvalent metal salt and has an Absorption Rate Index of at least about 5 minutes. Such polymers are prepared by contacting a substrate water-swellable, water-insoluble polymer particle with a polyvalent metal salt solution under conditions such that there is formed a polymer having an Absorption Rate Index of at least about 5 minutes.

Tagged Superabsorbent Polymers In A Multicomponent Structure
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US Patent:

20010037101, Nov 1, 2001
Filed:

Mar 9, 2001
Appl. No.:

09/803073
Inventors:

David Allan - Midland MI, US
Joseph Weir - Midland MI, US
Richard Van Effen - Midland MI, US
Sergio Cutie - Midland MI, US
International Classification:

A61F013/15
A61F013/20
US Classification:

604/368000, 604/367000, 604/385010
Abstract:

The present invention is an absorbent composite that contains at least two intermixed or segregated superabsorbent polymers, at least one of which is incorporated throughout with a latent indicator that becomes manifest by a developer that is peculiar to the indicator. The invention provides a means of monitoring the performance of accuracy of superabsorbent polymer placement in absorbent structures such as diapers, adult incontinence devices, and sanitary napkins.

Designing Dry And Porous Absorbent Composites Containing Super-Absorbent Polymers
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US Patent:

20050165376, Jul 28, 2005
Filed:

Feb 19, 2003
Appl. No.:

10/506652
Inventors:

Fredric Buchholz - Midland MI, US
David Allan - Midland MI, US
Joseph Weir - Midland MI, US
International Classification:

A61F013/15
A61F013/20
US Classification:

604385010
Abstract:

Super-absorbent polymer composites and a method for designing the composites are presented. A target weight of aqueous liquid to be absorbed is used in conjunction with a dryness quality value and, optionally, a porosity quality value to define types and masses of both super-absorbent polymer and a substruction meshwork which are intermixed to provide a composite which optimally minimizes free liquid and provides sustained tactile dryness after the targeted weight of aqueous liquid has been absorbed. In one form of the invention, the super-absorbent polymer and/or absorption composite derive from the use of computer-implemented determination of the absorption design-instance parameters.

Resilient Superabsorbent Compositions
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US Patent:

63002752, Oct 9, 2001
Filed:

Oct 20, 1999
Appl. No.:

9/403363
Inventors:

Joseph L. Weir - Midland MI
Assignee:

The Dow Chemical Company - Midland MI
International Classification:

B01J 2026
US Classification:

502402
Abstract:

Superabsorbent polymers having improved gel bed resiliency are prepared by dry blending the polymer with a multivalent metal salt to form a mixture; and contacting the mixture with from about 0. 1 to 10 percent of binder, based on the weight of the mixture.